1. Not changeable or subject to change
   "a fixed and unchangeable part of the germ plasm"; "the unchangeable seasons"; "one of the unchangeable facts of life"

See also: carved in stone, changeability, changeableness, changeless, confirmed, constant, fixed, frozen, lasting, permanent, set in stone, stable, static, unalterable, unchangeableness, unchangeably, unchanging

Antonym: changeable

• Sir Charles Scott Sherrington
• Sir Charles Spencer Chaplin
• Sir Charles Wheatstone
• Sir Charles William Siemens
• Sir Christopher Wren
• Sir Clive Marles Sinclair
• Sir David Alexander Cecil Low
• Sir David Bruce
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• Sir Edmund Hillary
• Sir Edmund Percival Hillary
• Sir Edward Elgar
• Sir Edward Victor Appleton
• Sir Edward William Elgar
• Sir Edwin Landseer Luytens
• Sir Edwin Lutyens
• Sir Ernst Boris Chain
• Sir Francis Bacon
• Sir Francis Drake
• Sir Francis Galton
• Sir Frank Whittle
• Sir Fred Hoyle
• Sir Frederick Ashton
• Sir Frederick Gowland Hopkins
• Sir Frederick Grant Banting